Harvey cockell



(N Model.)

HQYGOGKBLL. KILN FOR DRYING'BRICKS, 'cuh4 No. 274,910. Patented Aprs, 1883.

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y UNITED STATES i PATENT OFFICE.

CHAMBERS KILN FOR DRYING BRICK,4&.':.`

SPECIFICATION forming part of Letters Patent No. 274,910, dated .April 31, 1883. Applicaiionfled November 21, 1882. (No model.)

To all whom it may concern:

Be it known that I, HARVEY CoCKELL, residing at the city of'Ghicago, in the county of Cook and State of Illinois, and a citizen ofthe United States, have invented certain new and useful Improvements in Kilus for Drying Bricks and other Articles, of which the following is a full, clear, and exact description, reference being had to theacconipanying drawings, of wlrich Figure l is a transverse vertical section of a drying flue or kilnprovided with my improvement.` Fig. 2 is a horizontal sectional view on the line a b, Fig. 1. Fig. 3 is avertical longitudinal section on the line c d, Fig. 1. Fig. 4 is a crossfsection, enlarged, of the air distributing or diffusing flue.

This invention consists in the combination, with the main iiue of a usual kiln for the artilicial drying of raw bricks or other moist articles, of an auxiliary due, whereby the heated air from the furnace is caused to be diffused along the length of the main Hue and directed up through the bricks, &c., to be dried, as hereinafter described.

The usual construction of the brick-drying kilns which my device is designed to improve consists of a large flue or kiln, A, built of bricks,'with a l'urnace, D, at one end anda smoke-stack at the other, together with sliding iron doors for opening and closing the en-v trance and exit ofthe kiln,and provided with a track, C, on which run the iron trucks B, which carry the hacked bricks to be dried. The laden trucks are pushed in at the stack end, and, when the bricks are suciently dried, out at the furnace end. Thedefect in such kilns arises from'the tendency of the heated air to ascend directlyfromand near the furnace to the roof and upper part ofthe kiln, and to pass oliI into the stack without having done its full dutythat is to say, without having taken up all the moisture from, the bricks which it'is capable of absorbing-and'tbus, while the upper tiers of the bricks become rapidly dried, the lower tiers dry slowly and at the loss of time and at excessive cost of fuel.

\ I remedy this obvious and serious defect by introducing an air-diffusing Hue, F, having numerous perforations, h", which ue is located at the bottom of the main Hue, and preferably bethe furnace D, instead of being entirely free to 6o escape, as heretofore, to the upper part ofthe kiln, is diffused by the auxiliary flue F along the entirelength of the kiln, passing up through the perforations h, as'indicated by the arrows in Fig. 4, and, coming into contact first with the lower tiers of bricks, ascends through the superposed tiers, and finally passes off through the stack charged with moisture. By this means the drying of the bricks is more rapidly, evenly, and economically effected than has been heretofore possible without my improvement. Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a-n apparatus for drying bricks, Snc., the combination, with a single main due, of a central perforated diffusing flue extending from over and above the furnace the length of the main fine, or nearly so, all constructed, combined, and operating substantially as and for the purpose specified. y

L. VIn combination with the main fine, having a furnace at one end thereof and tracks adapted for receiving the wheels of trucks thereon, a single perforated dii'usingtlu'e, located centrally between the tracks and extending continuously from over and above the furnace the length of the main ue, ornearly so, substantially as and for the purpose set forth.

3. The combination, with the main flue and furnace ofa drying-kiln, of a centrally-placed perforated diffusingiiue extending V from over and above the furnace, the said diffusing-liuc being arched and extending from and above the bottom of the main Hue, substantially as described.

In testimony whereof I have hereunto affixed my signature this 8th day of November, A. D.

VHARVEY COCKELL.

Witnesses: W. SBJoHNsoN,

ALBERT MoTsCHMAN. 

